title: Dentin bonding: influence of bonded surface area and crosshead speed on bond strength.
abstract: This study investigated the influence of the bonded surface area and the crosshead speed on the dentin bond strengths of self-etch adhesives. Bovine mandibular incisors were mounted in self-curing resin and the facial surfaces were wet ground with #600 silicon carbide (SiC) paper. The dentin surfaces were treated according to the manufacturer's instructions. Adhesives were applied, and the resin composites were condensed into molds (2.4 or 4.0 mm in internal diameter), placed on to the dentin, and then light activated. Ten samples per test group were shear tested at crosshead speeds of 0.1, 0.5, 1.0, 5.0, and 10.0 mm/min. The results showed that higher crosshead speeds were associated with higher dentin bond strengths. This relationship was more significant for specimens with a smaller dentin bonding surface area.
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
authors.forename: Yukie
authors.initials: Y
authors.lastname: Tamura
authors.forename: Keishi
authors.initials: K
authors.lastname: Tsubota
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Otsuka
authors.forename: Hajime
authors.initials: H
authors.lastname: Endo
authors.forename: Chikako
authors.initials: C
authors.lastname: Takubo
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyazaki
authors.forename: Mark A
authors.initials: MA
authors.lastname: Latta
mesh_terms: D000268:Adhesiveness; D000818:Animals; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D003799:Dental Stress Analysis / Q000295:instrumentation*; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D055115:Light-Curing of Dental Adhesives; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry; D033081:Shear Strength; D017655:Silicon Compounds / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D017554:Carbon Compounds, Inorganic; C112828:Clearfil AP-X; C438313:Clearfil SE Bond; C515604:Clearfil Tri-S Bond; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; D017655:Silicon Compounds; D014867:Water; C022088:silicon carbide